Pipe or hose coupling



March 22, 1938. w. H. KENNEDY PIPE 0R HOSE COUPLING Filed Jan. 2, 1936-Patented Mar. 22, 1938 PATENT OFFICE PIPE OR HOSE COUPLING William H.Kennedy, Chicago, Ill., assignor, by mesne assignments, to George J.Embleton,

Chicago, Ill.

Application January 2', 1936, Serial No. 57,103

2 Claims. (c1. 2s5-175)' This invention relates to a coupling for pipes,hose, or tubing, such as commonly used for air, gas, water, or otherliquids, and is particularly useful for high pressures.

The principalobject of this invention is to provide an improved couplingor connector of the character indicated which will be simple andeconomical in construction and particularly durable and efiicient inuse.

Cther objects of the invention are to provide an improved coupling whichmay be readily con nected and disconnected and which will be locked inits connected position; to provide a coupling having few parts andhaving substantially no projections or objectionable outer portionswhich are apt to catch on anything over which the hose or coupling maybe drawn; to provide a coupling having novel means for making a tightclosure; to provide an improved catch or look for a de- 2 tachablecoupling; and to provide such othervadvantages and improvements as willappear from the following description. 1

I have illustrated a preferred form of my invention in. the accompanyingdrawing, in which Figure 1 is a perspective view showing the coupling inseparated or uncoupled position;

Figure 2 is a longitudinal sectional view taken on theline 2-2 andshowing the colipling in coupled position; I V p I go Figure 3 is a sideview partly in section on the line 3- -3 of Figure 2'; and I Figure 4 isa transverse sectional view taken on the lined-4 of Figure 2.-

The coupling shown inthe drawing hasa body portion or female member 5which is provided with threads 6 at one end.for engagement with thecorrespondingly threaded end of a pipe for may be provided with any wellknown means for connecting the same to a hose or tubing. The

outer end of the body portion or member 5 is preferably made hexagonalas shown at 8 for engagement with a wrench. This body portion also has asomewhat enlarged bore 9 with inwardly projecting annular ribs orabutments l0 and II which are spaced apart and positioned as shown inFigure 2. The inneror open end has two segmental fastening lugs orprojections l2 and has a notch or recess [3 for receiving a lock orlatch on the coacting coupling member.

This coacting or male member I4 has a shank I5 which is ridged forengagement with a hose 16, but this member may also be threaded orprovided with any well known means for engagement with a pipe or tubing.The outer or body portion ll of the coacting coupling member is ofapproximately the same diameter as the body portion 5 and has ashoulder-portion 18 which fits closely within the openend thereof andalso engages with or closely approaches the fastening lugs I2 as shownin Figure 3. The coupling 5 member I has an extension or reduced end 19which fits closely within the annular ribs or projections l0 and II andextends substantially through the body portion 5. This reduced extensionis also provided with segmental fasten- 10 ing lugs or projections 20which are spaced apart and arranged to coact with thelugs l2 for holdingthe coupling sections together. A tight clo sure isprovided between thecoupling members by means of a gasket or washer 2| which is prefl6erably folded or U-shaped in cross section as shown .inkFigure 2, andwhich is positioned in the annular space between the projections I0 andll, the arrangement being such that a tight 4 closure is made betweenthe inner surface or bore 20 of the coupling member 5 and the outersurface of the projection l9.

The coupling is-elfected by. inserting the tubular projection L9 in thebody portion 5' with the fastening. lugs 20 in alignment with the spaces25 between the fastening lugs l2 and [after they have passed such lugsthe male member is turned to bring the lugs 20} into engagement with thelugs l2, as shown in Figure 4. v v Inorder to lock the p'arts inoperative posi- 30 tion I provide a catch or locking bolt 22 which isarranged-longitudinally of the coupling and is mounted in a slot 23 inthe body portion I1. This catch or bolt has an engaging portion or end24 which is thinner than the main portion and ex--- 35 tends beyond thebodyportion soas to engage, with the slot or recess l3. The catch 22 iscarried on the end of a bolt or pin 25 which extendsthrough a transversebearing or strut 26 in the body portion ll. The opposite end of the boltis 40 provided. with a thumb-piece 21 which engages with a recess 28 inthe coupling member I1 and -which has a shouldered or reduced portion 29fitting in the hollow bore 30 of the bearing 26. A spring 3| surroundsthe bolt 25 and has one end 45 engaging with the reduced portion 29 andthe O posite end engaging with the abutment at the end of the bore 30,this spring tending to hold the catch 22 in looking position.

When the coupling is to be connected the male member is inserted in themanner above described and the thumb-piece 21 is pressed tov raise theend 24 of the catch 22 out or beyond the outer surface of the bodyportion 5, so that it will not interfere with the complete engagement ofthe male and female members. The thumb-piece may then be released whichpermits the outer end 23 of the catch to rest on the outer surface ofthe barrel or body 5. The coupling members are then rotated relativelyto each other until the fastening lugs engage with the 'lugs [2, atwhich time the catch 22 is in position to engage with the slot or recessl3 and will be drawn into the recess by the spring 3|, and thus lock theparts in coupled position.

When the coupling is to be uncoupled or dis connected, the thumb-piece21 is again pressed to release the catch 22 and the coupling member isturned until the lugs 20 will pass the lugs I2, thus reversing thecoupling movement. The bore of the body portion I! of the male couplingmember is preferably cored out or enlarged around the bearing 26 asshown at 32 in order to provide a passageway of the same size'or greaterthan the main passageway therethrough as will be apparent from Figure 3.

From this description it will be seen that my improved couplingcomprises a minimum number of parts and the outer configuration of thesame is such that the coupling is not apt to injure the hands of personsusing the same and is also not apt to catch against any object overwhich it may be drawn, or collect any material thereon. a

While I have shown and described a practical embodiment of my inventionI do not wish to be limitedto the exact construction set forth except asspecified in the following claims, in whichI claim:

1. A coupling for pipe or hose of substantially uniform diameter,comprising a female member having inwardly projecting annular ribs andhaving inwardly projecting segmental festening lugs,

' and a male member having a shouldered portion fitting in the open endof the female member, and a reduced portion extending into the femalemember and engaging with said ribs, fastening lugs on said reducedportion, a transverse bearing extending through the bore of the malemember, the bore being enlarged around said bearing to maintain theeffective cross section of the opening through the coupling, a boltengaging with said bearing, a catch on one end of the bolt which engageswith a longitudinal slot in the outer wall of said male member andhas areduced portion which engages with a recess in the end of the femalemember when in locking position and is flush with the outer surface ofthe coupling, a thumb-piece on the opposite end of the bolt positionedin a recess in the outer surface of the male member, and a springcoacting with the bolt and tending to hold the catch in engagingposition.

2. A coupling for pipe or hose comprising a female member havinginwardly projecting segmental fastening'lugs and a male member adaptedtoengage with said female member and having outwardly projecting fasteninglugs which coact with the first named lugs to hold the parts againstlongitudinal movement, a transverse bearing extending through the boreof the male member, said bore being enlarged around the bearing wherebythe passageway through the coupling is substantially uniform in crossarea, a bolt engaging with said bearing, a catch on one end of the boltwhich engages with a longitudinal slot in the outer wall of said malemember, and has a'reduced portion which engages with the recess in theend of the female member when in looking position to prevent rotativemovement between said members, and is flush With the outer surface ofthe coupling when in locking position, a thumb-piece on the opposite endof the-bolt positioned in a recess in the outer surface of the malemember, and a spring coacting with the bolt and tending to hold thecatch in engaging position.

WILLIAM H. KENNEDY.

